In one of my iParts, I'm using a Telerik RadGrid using the EditForms mode for editing a row.
<asp:Panel ID="body" runat="server" CssClass="PanelBody">
<telerik:RadGrid ID="RADGrid" runat="server" CssClass="MultiDE" >
<MasterTableView CssClass="Grid" EditMode="EditForms">
<Columns>When my grid includes a datetime field, this is rendered as a text input followed by an icon to open the DatePicker calendar. At least, that's how it is on 15.1.2.